The MC 250 is powered by a compact 2-stroke motor with a counter-balancer shaft for smooth, high-revving power. Delivering lots of torque, our power unit makes the bike super easy to use but also highly competitive - thanks to innovations like a twin-valve controlled power valve. Designed to centralize all internal moving parts, the motor also plays a huge role in the bike's agile handling.
CYLINDER AND PISTON
The MC 250's cylinder has a bore of 66.4 mm and is fitted with a twin-valve power valve system to churn out serious power across the rev range. The exhaust port is machined for precise power valve function, providing excellent overall power delivery. A lightweight piston keeps the motor turning freely for playful, quick-revving fun.
A 38mm flat slide Mikuni TMX carburetor ensures our 2-stroke screamer receives a constant supply of fuel, filling the motor with energy and giving riders smooth and controllable power across the full rev range.
Delivering quality, durability and reliability, the 5-speed transmission by PANKL Racing Systems is built tough, and does ensure easy and accurate gear shifting no matter how tough the conditions. The lever features an innovative tip design that prevents dirt build-up when ruts get deep and the dirt get sticky!
The magic at the heart of the motor! Made to be as light as possible and balanced perfectly to reduce unwanted vibrations, the 72mm stroke crankshaft is positioned to ensure it has little effect on handling while allowing the 250cc motor to produce it's high-revving fun.
Key to keeping the weight of the MC 250 to a minimum, the motor's thin and strong crankcases are made from a high-pressure die cast process. Allowing motor internals to be positioned closer together, the compact design allows for improved centralization of masses while ensuring the highest levels of rideability.
Our exhaust systems are key to the power delivery of all GASGAS motocross bikes. Developed to be slim using an innovative 3D process, they comply with FIM sound regulations, look great and most importantly deliver the very best performance. The MC 250 header pipe offers optimal geometry, performance and ground clearance and is fitted to a muffler that features an advanced internal construction for excellent noise damping.
The MC 250 features a Damped Diaphragm Steel (DDS) clutch, which is robust, super reliable and contributes to the compact design of the engine. Featuring a single diaphragm steel pressure plate instead of traditional coil springs, it also has a clutch basket CNC machined from a single piece of steel.
Fast is fun but slowing down is essential, which is why all GASGAS motocross bikes are fitted with Brembo calipers and controls. With 260mm front and 220mm rear discs, braking is easy, inspiring riders to push harder and ride faster.
BREMBO HYDRAULIC CLUTCH
No need for adjustment and a near maintenance-free operation, but the best thing about the Brembo hydraulic clutch is that it delivers a perfectly smooth action time and time again. With lever free-play automatically adjusted, the biting point and function of the clutch remain constant no matter if it's hot or cold.
INTEGRATED COOLING SYSTEM AND RADIATORS
Keeping our bikes slim means better handling, which is why the GASGAS motocross range features cooling systems that are integrated into the frames. Also allowing for improved cooling due to eliminating the need for additional hoses, together with the high-strength, lightweight radiators the complete system ensures, well, our bike stay super cool no matter how tough the conditions!
Built to take a beating, our wheels are ready to play rough. No matter how heavy the landing or how rough the track, the silver, high-strength rims, CNC machined hubs and lightweight spokes deliver maximum strength for complete peace of mind.
Connecting rider and bike to the track the Maxxis MaxxCross MX-ST tires are designed to be durable, grippy, and deliver the performance that completes our proven performance bikes. Inspiring confidence and boosting predictability the tread pattern is designed to maximize both traction and braking performance.